By Paulo Prada SAO PAULO (Reuters) – Despite opposition from nearly half of Brazil’s voters, leftist President Dilma Rousseff won re-election on Sunday and will have another four years to try to revive growth in a once-booming economy gone stagnant. The 66-year-old Rousseff, who was a Marxist guerrilla in her youth, overcame growing dissatisfaction with the economy, poor public services and corruption to narrowly clinch a second term for herself and the fourth in a row for her Workers’ Party. After a bitter, unpredictable campaign that pitted poorer Brazilians grateful for government anti-poverty programs against those exasperated with a stalled economy, Rousseff must now seek to continue flagship social services even as she tweaks economic policies to restore growth. Speaking to a relieved crowd of supporters on Sunday night in Brasilia, the capital, Rousseff acknowledged the close race and the call for change expressed by many voters.